i emailed him about this car, this is the repsonse i got as i was interested until i got the email back

"I can only answer a few of these questions i'm afraid.. The 'Technical' specs you require i don't know,It was purchased originally as a B.B.R Stage 4 Running T4 (12 PSI Stage 1) (18 PSI Stage 2) @ 408 BHP On the ally block!
It now has a T3/5 Hybrid built by B.B.R they did the last conversion with the receipt for the work taking it to 480 BHP! The reason for the Hybrid Turbo was to bring down the Turbo Lag which it has done! The Boost Pressure is still at 12/18 but could be turned up if needed.
The Block is the 4x4 one and i think of the top of my head the number is 200, B.B.R have not given a Detailed spec sheet as my friend did not require it nor understand it..I have all the receipts here but they list work done/Parts supplied/ to carry out Conversion & total and thats the sum total of the Information i have.As for the Crank yes it has been ground and balanced along with New uprated rods and pistons,They carried out the needed changes and upgrades to the block and engine as my friends next conversion was taking it up to 700 B.H.P!"